1 files changed, 76 insertions, 46 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 1c622e2b0504..03fff6239b3c 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -46,18 +46,48 @@ enum {
         ATA_MAX_SECTORS_TAPE    = 65535,
 
         ATA_ID_WORDS            = 256,
+        ATA_ID_CONFIG           = 0,
+        ATA_ID_CYLS             = 1,
+        ATA_ID_HEADS            = 3,
+        ATA_ID_SECTORS          = 6,
         ATA_ID_SERNO            = 10,
+        ATA_ID_BUF_SIZE         = 21,
         ATA_ID_FW_REV           = 23,
         ATA_ID_PROD             = 27,
+        ATA_ID_MAX_MULTSECT     = 47,
+        ATA_ID_DWORD_IO         = 48,
+        ATA_ID_CAPABILITY       = 49,
         ATA_ID_OLD_PIO_MODES    = 51,
+        ATA_ID_OLD_DMA_MODES    = 52,
         ATA_ID_FIELD_VALID      = 53,
+        ATA_ID_CUR_CYLS         = 54,
+        ATA_ID_CUR_HEADS        = 55,
+        ATA_ID_CUR_SECTORS      = 56,
+        ATA_ID_MULTSECT         = 59,
+        ATA_ID_LBA_CAPACITY     = 60,
+        ATA_ID_SWDMA_MODES      = 62,
         ATA_ID_MWDMA_MODES      = 63,
         ATA_ID_PIO_MODES        = 64,
         ATA_ID_EIDE_DMA_MIN     = 65,
+        ATA_ID_EIDE_DMA_TIME    = 66,
         ATA_ID_EIDE_PIO         = 67,
         ATA_ID_EIDE_PIO_IORDY   = 68,
-        ATA_ID_UDMA_MODES       = 88,
+        ATA_ID_QUEUE_DEPTH      = 75,
         ATA_ID_MAJOR_VER        = 80,
+        ATA_ID_COMMAND_SET_1    = 82,
+        ATA_ID_COMMAND_SET_2    = 83,
+        ATA_ID_CFSSE            = 84,
+        ATA_ID_CFS_ENABLE_1     = 85,
+        ATA_ID_CFS_ENABLE_2     = 86,
+        ATA_ID_CSF_DEFAULT      = 87,
+        ATA_ID_UDMA_MODES       = 88,
+        ATA_ID_HW_CONFIG        = 93,
+        ATA_ID_SPG              = 98,
+        ATA_ID_LBA_CAPACITY_2   = 100,
+        ATA_ID_LAST_LUN         = 126,
+        ATA_ID_DLF              = 128,
+        ATA_ID_CSFO             = 129,
+        ATA_ID_CFA_POWER        = 160,
         ATA_ID_PIO4             = (1 << 1),
 
         ATA_ID_SERNO_LEN        = 20,
@@ -438,17 +468,17 @@ static inline int ata_is_data(u8 prot)
 /*
  * id tests
  */
-#define ata_id_is_ata(id)       (((id)[0] & (1 << 15)) == 0)
-#define ata_id_has_lba(id)      ((id)[49] & (1 << 9))
-#define ata_id_has_dma(id)      ((id)[49] & (1 << 8))
+#define ata_id_is_ata(id)       (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
+#define ata_id_has_lba(id)      ((id)[ATA_ID_CAPABILITY] & (1 << 9))
+#define ata_id_has_dma(id)      ((id)[ATA_ID_CAPABILITY] & (1 << 8))
 #define ata_id_has_ncq(id)      ((id)[76] & (1 << 8))
-#define ata_id_queue_depth(id)  (((id)[75] & 0x1f) + 1)
-#define ata_id_removeable(id)   ((id)[0] & (1 << 7))
+#define ata_id_queue_depth(id)  (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
+#define ata_id_removeable(id)   ((id)[ATA_ID_CONFIG] & (1 << 7))
 #define ata_id_has_atapi_AN(id) \
         ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
           ((id)[78] & (1 << 5)) )
-#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
-#define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
+#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
+#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
 #define ata_id_u32(id,n)        \
         (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
 #define ata_id_u64(id,n)        \
@@ -457,7 +487,7 @@ static inline int ata_is_data(u8 prot)
           ((u64) (id)[(n) + 1] << 16) | \
           ((u64) (id)[(n) + 0]) )
 
-#define ata_id_cdb_intr(id)     (((id)[0] & 0x60) == 0x20)
+#define ata_id_cdb_intr(id)     (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
 
 static inline bool ata_id_has_hipm(const u16 *id)
 {
@@ -482,75 +512,75 @@ static inline bool ata_id_has_dipm(const u16 *id)
 
 static inline int ata_id_has_fua(const u16 *id)
 {
-        if ((id[84] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
                 return 0;
-        return id[84] & (1 << 6);
+        return id[ATA_ID_CFSSE] & (1 << 6);
 }
 
 static inline int ata_id_has_flush(const u16 *id)
 {
-        if ((id[83] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
                 return 0;
-        return id[83] & (1 << 12);
+        return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
 }
 
 static inline int ata_id_has_flush_ext(const u16 *id)
 {
-        if ((id[83] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
                 return 0;
-        return id[83] & (1 << 13);
+        return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
 }
 
 static inline int ata_id_has_lba48(const u16 *id)
 {
-        if ((id[83] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
                 return 0;
-        if (!ata_id_u64(id, 100))
+        if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
                 return 0;
-        return id[83] & (1 << 10);
+        return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
 }
 
 static inline int ata_id_hpa_enabled(const u16 *id)
 {
         /* Yes children, word 83 valid bits cover word 82 data */
-        if ((id[83] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
                 return 0;
         /* And 87 covers 85-87 */
-        if ((id[87] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
                 return 0;
         /* Check command sets enabled as well as supported */
-        if ((id[85] & ( 1 << 10)) == 0)
+        if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
                 return 0;
-        return id[82] & (1 << 10);
+        return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
 }
 
 static inline int ata_id_has_wcache(const u16 *id)
 {
         /* Yes children, word 83 valid bits cover word 82 data */
-        if ((id[83] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
                 return 0;
-        return id[82] & (1 << 5);
+        return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
 }
 
 static inline int ata_id_has_pm(const u16 *id)
 {
-        if ((id[83] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
                 return 0;
-        return id[82] & (1 << 3);
+        return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
 }
 
 static inline int ata_id_rahead_enabled(const u16 *id)
 {
-        if ((id[87] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
                 return 0;
-        return id[85] & (1 << 6);
+        return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
 }
 
 static inline int ata_id_wcache_enabled(const u16 *id)
 {
-        if ((id[87] & 0xC000) != 0x4000)
+        if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
                 return 0;
-        return id[85] & (1 << 5);
+        return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
 }
 
 /**
@@ -581,7 +611,7 @@ static inline unsigned int ata_id_major_version(const u16 *id)
 
 static inline int ata_id_is_sata(const u16 *id)
 {
-        return ata_id_major_version(id) >= 5 && id[93] == 0;
+        return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0;
 }
 
 static inline int ata_id_has_tpm(const u16 *id)
@@ -599,7 +629,7 @@ static inline int ata_id_has_dword_io(const u16 *id)
         /* ATA 8 reuses this flag for "trusted" computing */
         if (ata_id_major_version(id) > 7)
                 return 0;
-        if (id[48] & (1 << 0))
+        if (id[ATA_ID_DWORD_IO] & (1 << 0))
                 return 1;
         return 0;
 }
@@ -608,22 +638,22 @@ static inline int ata_id_current_chs_valid(const u16 *id)
 {
         /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
            has not been issued to the device then the values of
-           id[54] to id[56] are vendor specific. */
-        return (id[53] & 0x01) && /* Current translation valid */
-                id[54] &&  /* cylinders in current translation */
-                id[55] &&  /* heads in current translation */
-                id[55] <= 16 &&
-                id[56];    /* sectors in current translation */
+           id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
+        return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
+                id[ATA_ID_CUR_CYLS] &&  /* cylinders in current translation */
+                id[ATA_ID_CUR_HEADS] &&  /* heads in current translation */
+                id[ATA_ID_CUR_HEADS] <= 16 &&
+                id[ATA_ID_CUR_SECTORS];    /* sectors in current translation */
 }
 
 static inline int ata_id_is_cfa(const u16 *id)
 {
-        u16 v = id[0];
-        if (v == 0x848A)        /* Standard CF */
+        if (id[ATA_ID_CONFIG] == 0x848A)        /* Standard CF */
                 return 1;
         /* Could be CF hiding as standard ATA */
-        if (ata_id_major_version(id) >= 3 &&  id[82] != 0xFFFF &&
-                        (id[82] & ( 1 << 2)))
+        if (ata_id_major_version(id) >= 3 &&
+            id[ATA_ID_COMMAND_SET_1] != 0xFFFF &&
+           (id[ATA_ID_COMMAND_SET_1] & (1 << 2)))
                 return 1;
         return 0;
 }
@@ -632,21 +662,21 @@ static inline int ata_drive_40wire(const u16 *dev_id)
 {
         if (ata_id_is_sata(dev_id))
                 return 0;       /* SATA */
-        if ((dev_id[93] & 0xE000) == 0x6000)
+        if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
                 return 0;       /* 80 wire */
         return 1;
 }
 
 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
 {
-        if ((dev_id[93] & 0x2000) == 0x2000)
+        if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
                 return 0;       /* 80 wire */
         return 1;
 }
 
 static inline int atapi_cdb_len(const u16 *dev_id)
 {
-        u16 tmp = dev_id[0] & 0x3;
+        u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
         switch (tmp) {
         case 0:         return 12;
         case 1:         return 16;
@@ -656,7 +686,7 @@ static inline int atapi_cdb_len(const u16 *dev_id)
 
 static inline int atapi_command_packet_set(const u16 *dev_id)
 {
-        return (dev_id[0] >> 8) & 0x1f;
+        return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
 }
 
 static inline int atapi_id_dmadir(const u16 *dev_id)